CN218115049U - Concentration tower - Google Patents
Concentration tower Download PDFInfo
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- CN218115049U CN218115049U CN202221211291.5U CN202221211291U CN218115049U CN 218115049 U CN218115049 U CN 218115049U CN 202221211291 U CN202221211291 U CN 202221211291U CN 218115049 U CN218115049 U CN 218115049U
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Abstract
The utility model discloses a concentration tower, concentration tower includes the tower body, pipeline and nozzle, the tower body has the cavity, air inlet and gas outlet, the cavity has first chamber and the second chamber that communicates each other, the top at the second chamber is established to the first chamber, air inlet and gas outlet all communicate with the first chamber, the first chamber is used for circulating the flue gas, the second chamber is used for storing the concentrate, the pipeline is established at first intracavity, the nozzle is established in one side of pipeline towards the second chamber and is communicated with the pipeline, the one end and the second chamber intercommunication of pipeline, so that with concentrate income pipeline in the second chamber and spout first intracavity from the nozzle, the inner peripheral surface in first chamber is scribbled with first anticorrosive coating, the inner peripheral surface in second chamber scribbles with the second anticorrosive coating, the material of first anticorrosive coating and second anticorrosive coating is different, and the thickness of second anticorrosive coating is greater than the thickness of first anticorrosive coating, the nozzle is made by the third anticorrosive material. The utility model discloses a concentrated tower has advantages such as simple structure, corrosion resistance height, low cost.
Description
Technical Field
The utility model relates to a high salt waste water treatment field specifically relates to a concentration tower.
Background
The desulfurization wastewater contains various pollutants in the flue gas and the limestone, so the desulfurization wastewater has the characteristics of high content of suspended matters, high salt content, high content of heavy metals and high hardness, and is directly discharged to cause great harm to the environment.
In the related technology, the desulfurization waste water zero discharge technology adopting the waste heat of the flue gas as a heat source is gradually paid attention, and the desulfurization waste water concentration tower has the advantages of short service life and higher cost.
SUMMERY OF THE UTILITY MODEL
The present invention is made based on the discovery and recognition by the inventors of the following facts and problems:
in the related technology, the inside of the desulfurization wastewater concentration tower is subjected to antiseptic treatment by adopting a homogeneous antiseptic method, and all parts in the concentration tower have the same antiseptic capability. However, due to the difference of corrosion resistance degrees of different areas in the concentration tower, the corrosion resistance degree of some areas is high, and the corrosion resistance degree of some areas is low, so that by adopting a homogeneous corrosion-resistant design, all parts must be advanced according to the corrosion-resistant requirement of the area which is most easily corroded, and huge waste is caused to resources and cost.
The present invention aims at solving one of the technical problems in the related art at least to a certain extent. Therefore, the embodiment of the utility model provides a concentration tower that resistance to corrosion is strong, simple structure, life is high.
The utility model discloses concentration tower includes: the tower body is provided with a chamber, an air inlet and an air outlet, the chamber is provided with a first cavity and a second cavity which are communicated with each other, the first cavity is arranged above the second cavity, the air inlet and the air outlet are both communicated with the first cavity, the first cavity is used for circulating flue gas, and the second cavity is used for storing concentrated solution; the pipeline is arranged in the first cavity, the nozzle is arranged on one side, facing the second cavity, of the pipeline and is communicated with the pipeline, one end of the pipeline is communicated with the second cavity so that the concentrated solution in the second cavity can flow into the pipeline and can be sprayed into the first cavity from the nozzle, a first anticorrosive coating is coated on the inner circumferential surface of the first cavity, a second anticorrosive coating is coated on the inner circumferential surface of the second cavity, the first anticorrosive coating and the second anticorrosive coating are made of different materials, the thickness of the second anticorrosive coating is larger than that of the first anticorrosive coating, and the nozzle is made of a third anticorrosive material.
The utility model discloses concentrated tower sets up first anticorrosive coating, second anticorrosive coating and third anticorrosive material to according to each partial degree of corrosion of concentrated tower different, adopt different anticorrosive designs to each part of concentrated tower, thereby improved the life of concentrated tower, reduced the processing manufacturing cost of concentrated tower.
In some embodiments, the concentration column further comprises: the air inlet pipe is communicated with the air inlet so that the flue gas can flow into the first cavity, and the inner circumferential surface of the air inlet pipe is coated with the first anticorrosive layer; and one end of the air outlet pipe is communicated with the air outlet, and the inner circumferential surface of the air outlet pipe is coated with the second anticorrosive layer.
In some embodiments, a thickness of the first erosion protection layer within the inlet pipe and a thickness of the second erosion protection layer within the outlet pipe are each no less than 2mm.
In some embodiments, the concentration tower further comprises a mist eliminator disposed within the first chamber to remove water mist from the first chamber.
In some embodiments, the concentration tower further comprises an agitator disposed at the bottom of the second chamber, the outer circumferential surface of the agitator is made of the third corrosion-resistant material or carbon steel lining rubber, and the agitator is configured to agitate the concentrated solution in the second chamber.
In some embodiments, the pipeline includes a first pipe and a second pipe, the first pipe and the second pipe are disposed in the first cavity, the first pipe and the second pipe are disposed at intervals in an up-down direction, the nozzles are disposed on a side of the first pipe facing the second cavity and a side of the second pipe facing the second cavity, the first pipe and the second pipe are communicated with the second cavity, and an inner circumferential surface of the first pipe and an inner circumferential surface of the second pipe are coated with the first anticorrosive layer.
In some embodiments, a position 1.5m below the lower end surface of the nozzle on the second pipe is a first position, a region between the first position and the lower end surface of the nozzle on the first pipe is a spray zone, and the thickness of the first anticorrosive layer on the inner peripheral surface of the spray zone is not less than 3mm.
In some embodiments, the concentration tower further comprises a mounting rack, the mounting rack is arranged in the first cavity, the pipeline is arranged on the mounting rack, the first anticorrosive layer is coated on the outer peripheral surface of the mounting rack, and the thickness of the first anticorrosive layer on the outer peripheral surface of the mounting rack is not less than 3mm.
In some embodiments, the thickness of the second corrosion protection layer within the second cavity is not less than 4mm.
In some embodiments, the first anticorrosive layer is an FRP anticorrosive layer, and/or the second anticorrosive layer is a glass flake resin anticorrosive layer, and/or the third anticorrosive material is a silicon carbide anticorrosive material.
Drawings
Fig. 1 is a schematic structural diagram of a concentration tower according to an embodiment of the present invention.
Reference numerals:
a concentration tower 100;
a tower body 1; a first chamber 13; a second chamber 14;
a pipe 2; a first tube 21; a second tube 22;
an intake pipe 3; a demister 4; a stirrer 5; a mounting frame 6; a nozzle 7; and a pump 8.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.
The following describes a concentration tower according to an embodiment of the present invention with reference to the accompanying drawings.
As shown in fig. 1, the concentration tower according to the embodiment of the present invention includes a tower body 1, a pipe 2, and a nozzle 7.
The tower body 1 has a chamber, an air inlet and an air outlet (not shown in the figure), the chamber has a first cavity 13 and a second cavity 14 that communicate with each other, the first cavity 13 is established above the second cavity 14, the air inlet and the air outlet all communicate with the first cavity 13, the first cavity 13 is used for circulating the flue gas, the second cavity 14 is used for storing the concentrate so that the flue gas exchanges heat with the concentrate to make the concentrate. Specifically, as shown in fig. 1, the first chamber 13 is located above the second chamber 14, and the second chamber 14 is a liquid storage chamber, so that the second chamber 14 stores the concentrated liquid, for example: desulfurization waste water, the air inlet is established in the left side of first chamber 13 and is linked together with first chamber 13, the gas outlet is established on the right side of first chamber 13 and is linked together with first chamber 13, the flue gas flow into first chamber 13 in through the air inlet and with the desulfurization waste water heat transfer in the second chamber 14 for desulfurization waste water gasification just takes out of tower body 1 through the flue gas outside, thereby makes desulfurization waste water constantly concentrated, in order to carry out the desulfurization to waste water.
Specifically, as shown in fig. 1, the pipeline 2 is arranged in the first cavity 13 and is located above the first cavity 13, the nozzles 7 are multiple, and the nozzles 7 are made of a third corrosion-resistant material, the nozzles 7 are sequentially arranged at intervals along the left and right directions of the pipeline 2, one end of the pipeline 2 is communicated with the second cavity 14 through the pump 8, the communication point of the pipeline 2 and the second cavity 14 is arranged at the bottom of the second cavity 14, so that the concentrated solution in the second cavity 14 is pumped into the pipeline 2 through the pump 8 and sprayed into the first cavity 13 through the nozzles 7, so that the concentrated solution is in full contact with the flue gas for heat exchange, the concentrated solution is evaporated, because the second cavity 14 stores desulfurization waste water, only the flue gas circulates in the first cavity 13, therefore, the corrosion suffered by the second cavity 14 is greater than the corrosion suffered by the first cavity 13, therefore, the thickness of the first anticorrosive layer is smaller than that of the second anticorrosive layer, and the first anticorrosive layer with low cost can be selected as an anticorrosive layer with high corrosion resistance, and therefore, the concentrated tower 100 is more reasonable.
The utility model discloses concentration tower 100 sets up first anticorrosive coating, second anticorrosive coating and third anticorrosive material to can be different according to the degree of corrosion that concentration tower 100 is inside to be received, to each inside anticorrosive material that adopts of concentration tower 100, reduced concentration tower 100's processing manufacturing cost, improved concentration tower 100's life.
In some embodiments, the thickening tower 100 further comprises an inlet pipe 3 and an outlet pipe (not shown in the figures).
Intake pipe 3 and air inlet intercommunication to in the flue gas flowed into first chamber 13, the inner peripheral surface of intake pipe 3 scribbles first anticorrosive coating. Specifically, as shown in fig. 1, the air inlet pipe 3 is arranged in the air outlet in a penetrating manner, the left end of the air inlet pipe 3 can be communicated with the flue gas, so that the flue gas flows into the first cavity 13 through the air inlet pipe 3, the inner peripheral surface of the air inlet pipe 3 is provided with a first anticorrosive coating, and when the concentrated solution in the second cavity 14 splashes to the air inlet pipe 3, the concentrated solution can be prevented from corroding the air inlet pipe 3 by the first anticorrosive coating, so that the service life of the air inlet pipe 3 is prolonged. Because the temperature of flue gas is generally about 160 ℃, consequently, the temperature resistance of intake pipe 3 is not less than 160 ℃ to prevent that high temperature flue gas from damaging intake pipe 3, further guaranteed the life of intake pipe 3.
One end of the air outlet pipe is communicated with the air outlet, and the inner circumferential surface of the air outlet pipe is coated with a second anticorrosive coating. From this, get rid of the cavity through the flue gas after the outlet duct with the heat transfer, and the inner peripheral surface of outlet duct is equipped with the second anticorrosive coating to when the outlet duct was spattered to the concentrate in second cavity 14, the rotten outlet duct of concentrate can be prevented to first anticorrosive coating, thereby has improved the life of outlet duct.
Since the spraying of the concentrate in the chamber through the nozzle 7 will result in a small portion of the concentrate flowing into the outlet or inlet pipe 3. In some embodiments, the thickness of the first corrosion protection layer in the inlet pipe 3 and the thickness of the second corrosion protection layer in the outlet pipe are both no less than 2mm. Therefore, the arrangement of the first anticorrosive layer in the air inlet pipe 3 and the arrangement of the second anticorrosive layer in the air outlet pipe are more reasonable, and the resource waste is reduced.
Since the desulfurization waste water forms water mist in the first cavity in the spraying process of the nozzle 7, the water mist can corrode a subsequent flue. Thus, in some embodiments, the thickening tower 100 further comprises a mist eliminator 4, the mist eliminator 4 being disposed within the first chamber 13 to remove mist from the first chamber 13. Specifically, as shown in fig. 1, the demister 4 is arranged in the first chamber 13 and above the pipe 2, so that the water mist in the chamber is removed through the demister 4, thereby prolonging the service life of the subsequent flue, the inner pipe 2 of the demister 4 is made of PP, and when the concentrated solution in the chamber is sprayed on the demister 4, the concentrated solution is prevented from corroding the demister 4, and the service life of the demister 4 is prolonged.
In some embodiments, the thickening tower 100 further comprises a stirrer 5, the stirrer 5 is disposed at the bottom of the second chamber 14 to stir the concentrated solution in the second chamber 14, and the outer circumferential surface of the stirrer 5 is provided with a third corrosion-proof material or carbon steel lining rubber. Specifically, as shown in fig. 1, the stirrer 5 is disposed at the bottom of the second chamber 14 for stirring the concentrated solution in the second chamber 14, so as to prevent the precipitate in the concentrated solution from depositing at the bottom of the second chamber 14, and the outer circumferential surface of the stirrer 5 is made of a third corrosion-proof material or carbon steel lining rubber, so that the concentrated solution in the second chamber 14 is prevented from corroding the stirrer 5, and the service life of the stirrer 5 is prolonged.
In some embodiments, the duct 2 includes a first pipe 21 and a second pipe 22, the first pipe 21 and the second pipe 22 are disposed in the first cavity 13, the first pipe 21 and the second pipe 22 are disposed at intervals in the up-down direction, the nozzles 7 are disposed on a side of the first pipe 21 facing the second cavity 14 and a side of the second pipe 22 facing the second cavity 14, respectively, and the first pipe 21 and the second pipe 22 are both communicated with the second cavity 14.
Specifically, as shown in fig. 1, the first pipe 21 and the second pipe 22 are made of PP, the first pipe 21 and the second pipe 22 are both disposed in the first cavity 13, the first pipe 21 and the second pipe 22 extend in the left-right direction, and one end of the first pipe 21 and one end of the second pipe 22 are both communicated with the second cavity 14 through the pump 8, so that the concentrated solution in the second cavity 14 is sprayed into the first cavity 13 through the first pipe 21 and the second pipe 22, the arrangement of the first pipe 21 and the second pipe 22 not only improves the efficiency of heat exchange between the concentrated solution and the flue gas, effectively reduces the temperature of the flue gas, prevents the flue gas from being excessively high and damaging the subsequent processing equipment and the flue, but also enables one of the first pipe 21 and the second pipe 22 to work, and the other one of the first pipe 21 and the second pipe 22 serves as a spare pipe.
In some embodiments, the number of the pipes 2 may be multiple, the multiple pipes 2 form multiple rows in the up-down direction, the multiple rows are arranged at intervals in the up-down direction, and the multiple pipes 2 form one row in the front-back direction, so that the arrangement of the pipes 2 is more reasonable.
In some embodiments, the thickening tower 100 further comprises a mounting block 6, the mounting block 6 being disposed within the first chamber 13, the pipe 2 being disposed on the mounting block 6, an outer circumferential surface of the mounting block 6 being coated with a first corrosion protection layer. Specifically, as shown in fig. 1, the mounting frame 6 is disposed in the first chamber 13 and located at the top of the first chamber 13, and located below the demister 4, so as to provide a mounting base for the first pipe 21 and the second pipe 22 through the mounting frame 6, so that the first pipe 21 and the second pipe 22 are mounted on the mounting frame 6, the outer surface of the mounting frame 6 is coated with a first anticorrosive layer, so that the mounting frame 6 is corroded by the desulfurization wastewater sprayed from the pipeline 2, and the service life of the mounting frame 6 is prolonged.
In some embodiments, a position 1.5m below the lower end face of the nozzle 7 on the second pipe 22 is a first position, a region between the first position and the lower end face of the nozzle 7 on the first pipe 21 is a spray region, and the thickness of the first anticorrosive layer of the inner peripheral surface of the spray region is not less than 3mm. Specifically, in the spraying area formed by the position of about 1.5 meters below the lowest layer of pipeline 2 and the position of the uppermost pipeline 2, the first anticorrosive layer in the spraying area is not less than 3mm, so that the thickness of the first anticorrosive layer in the first cavity 13 and the thickness of the first anticorrosive layer on the outer peripheral surface of the mounting frame 6 are different according to the degree of corrosion, thereby saving the processing and manufacturing cost of the concentration tower 100.
In some embodiments, the thickness of the second corrosion protection layer within the second cavity 14 is not less than 4mm. Specifically, set up the second anticorrosive coating on the bottom surface of second chamber 14 and the side within 2.5 meters apart from the bottom surface, the thickness of second anticorrosive coating is not less than 4mm, from this, according to corroding the degree difference, to the thickness of the first anticorrosive coating in the first chamber 13 and the thickness of the first anticorrosive coating of the outer peripheral face of mounting bracket 6 and the thickness of the second anticorrosive coating in the second chamber 14 to the processing manufacturing cost of concentrating tower 100 has been saved.
Because the FRP anticorrosive coating is suitable for places without solid abrasion or slurry flowing or places with regular internal formation, the FRP anticorrosive coating has low cost and is convenient to process and manufacture. Thus, in some embodiments, the first corrosion protection layer is an FRP corrosion protection layer. Specifically, the FRP anticorrosive layer is disposed on the inner circumferential surface of the air inlet pipe 3, the inner circumferential surface of the first cavity 13, and the outer circumferential surface of the mounting bracket 6, thereby reducing the manufacturing cost of the concentration tower 100 and making the arrangement of the concentration tower 100 more reasonable.
Since the glass flake resin anticorrosive layer is suitable for places where slurry flows or solid is abraded, but the processing and manufacturing cost is higher compared with that of the FRP anticorrosive layer, in some embodiments, the second anticorrosive layer is the glass flake resin anticorrosive layer. Specifically, the glass flake resin anticorrosive layer is disposed on the inner circumferential surface of the second chamber 14, and thus, the manufacturing cost of the concentrating tower 100 is reduced, so that the arrangement of the concentrating tower 100 is more reasonable.
Because the silicon carbide anticorrosive material can be directly added into the rotating equipment, and the wear resistance of the silicon carbide anticorrosive material is higher, but the processing and manufacturing cost is higher compared with a glass scale resin anticorrosive layer and an FRP anticorrosive layer. Thus, in some embodiments, the third corrosion inhibiting material is a silicon carbide corrosion inhibiting material, in particular, a silicon carbide corrosion inhibiting material is applied within the agitator or over-flow components of the pump 8. Therefore, the manufacturing cost of the rectifying tower 100 is reduced, and the arrangement of the rectifying tower 100 is more reasonable.
It is worth mentioning that: the whole material of the equipment in the concentration tower 100 is corrosion-resistant material, the rotating equipment such as the pump 8 outside the concentration tower 100 is silicon carbide coating material, and the pipeline 2 is made of any one of carbon steel lining glue, FRP or silicon carbide coating material.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.
In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although the above embodiments have been shown and described, it should be understood that they are exemplary and should not be construed as limiting the present invention, and that many changes, modifications, substitutions and alterations to the above embodiments by those of ordinary skill in the art are intended to be within the scope of the present invention.
Claims (10)
1. A thickening column, comprising: the tower body is provided with a chamber, an air inlet and an air outlet, the chamber is provided with a first cavity and a second cavity which are communicated with each other, the first cavity is arranged above the second cavity, the air inlet and the air outlet are both communicated with the first cavity, the first cavity is used for circulating flue gas, and the second cavity is used for storing concentrated solution; the pipeline is arranged in the first cavity, the nozzle is arranged on one side, facing the second cavity, of the pipeline and communicated with the pipeline, one end of the pipeline is communicated with the second cavity so that the concentrated solution in the second cavity can flow into the pipeline and be sprayed into the first cavity from the nozzle, a first anticorrosive layer is coated on the inner peripheral surface of the first cavity, a second anticorrosive layer is coated on the inner peripheral surface of the second cavity, the first anticorrosive layer and the second anticorrosive layer are made of different materials, the thickness of the second anticorrosive layer is larger than that of the first anticorrosive layer, and the nozzle is made of a third anticorrosive material.
2. The concentrating column of claim 1, further comprising:
the air inlet pipe is communicated with the air inlet so that the flue gas can flow into the first cavity, and the inner circumferential surface of the air inlet pipe is coated with the first anticorrosive layer;
and one end of the air outlet pipe is communicated with the air outlet, and the inner circumferential surface of the air outlet pipe is coated with the second anticorrosive layer.
3. The concentrating tower of claim 2, wherein the thickness of the first corrosion protection layer in the inlet pipe and the thickness of the second corrosion protection layer in the outlet pipe are not less than 2mm.
4. The concentrating tower of claim 1, further comprising a mist eliminator disposed in the first chamber to remove water mist from the first chamber.
5. The concentration tower of claim 1, further comprising a stirrer disposed at the bottom of the second chamber, wherein the stirrer is made of the third corrosion-proof material or carbon steel lining rubber and is used for stirring the concentrated solution in the second chamber.
6. The concentration tower of claim 1, wherein the pipeline comprises a first pipe and a second pipe, the first pipe and the second pipe are both disposed in the first cavity, the first pipe and the second pipe are disposed at intervals in an up-down direction, the nozzles are respectively disposed on a side of the first pipe facing the second cavity and a side of the second pipe facing the second cavity, the first pipe and the second pipe are both communicated with the second cavity, and an inner circumferential surface of the first pipe and an inner circumferential surface of the second pipe are both coated with the first corrosion protection layer.
7. The concentration tower according to claim 6, wherein a position 1.5m below the lower end surface of the spray nozzle on the second pipe is a first position, an area between the first position and the lower end surface of the spray nozzle on the first pipe is a spray area, and the thickness of the first anticorrosive layer on the inner peripheral surface of the spray area is not less than 3mm.
8. The concentration tower of claim 1, further comprising a mounting frame, wherein the mounting frame is arranged in the first cavity, the pipeline is arranged on the mounting frame, the first anticorrosive layer is coated on the outer peripheral surface of the mounting frame, and the thickness of the first anticorrosive layer on the outer peripheral surface of the mounting frame is not less than 3mm.
9. The concentrating tower of claim 1, wherein the second corrosion protection layer in the second chamber has a thickness of no less than 4mm.
10. Concentration column according to any of claims 1-9, wherein the first corrosion protection layer is an FRP corrosion protection layer, and/or the second corrosion protection layer is a glass flake resin corrosion protection layer, and/or the third corrosion protection material is a silicon carbide corrosion protection material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221211291.5U CN218115049U (en) | 2022-05-19 | 2022-05-19 | Concentration tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221211291.5U CN218115049U (en) | 2022-05-19 | 2022-05-19 | Concentration tower |
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| CN218115049U true CN218115049U (en) | 2022-12-23 |
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| CN202221211291.5U Active CN218115049U (en) | 2022-05-19 | 2022-05-19 | Concentration tower |
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